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BoP Lab / Classes / BS

BS vs CF vs SSM vs FRI pace at every track

Lap times across years say as much about the weather as the class. % of BS is each class's best lap as a share of BS's on the same day, so the conditions drop out: 100% is level, less is quicker, and a move in it is the class getting faster or slower against the field.

Class · click a class to switch, + to compare alongside (up to 4: remove one to add another)
1DASB SpecB-specB-SpecBS×BSpcBSpecC6vsCF×CFCCTACTBCTCCTDEPEPxF5F6F500F600F1000FAFBFCFEFE 2FE2FFFMFPvsFRI×FSFVFXGT-1GT-2GT-XGT1GT2GT3GT3UGTAGTLGTXHPIT7ITAITBITCITEITE-OITRITSPP1P2PXRSRS7SMSM SMSESMSE-TSMXSPUSRFSRF 3SRF3vsSSM×STLSTUSUNT1T2T3T4TTAUnknownHide inactive classes
Reference · what % is measured against
Tracks · untick to narrow

Closest to the field: BS 100.0% of BS Kyle Keenan, Thunderhill Raceway Park Majors @ Thunderhill race

1:402:002:20BS race best at Majors @ Thunderhill: 2:15.714 (Kyle Keenan)BS race best at Voodoo Quartre 2017: 2:06.427 (John Phillips)BS qualifying best at Majors @ Thunderhill: 2:15.069 (Kyle Keenan)BS qualifying best at Voodoo Quartre 2017: 2:06.994 (John Phillips)CF race best at Majors May 2016: 1:37.406 (David Loken)CF race best at Colorado Home Heroes Grand Prix 2026: 1:37.686 (Levi Zeidlhack)CF race best at Southeast SARRC 2026: 1:26.210 (W. L. Manofsky)CF race best at Colorado Freedom Sprints 2026: 1:57.321 (Levi Zeidlhack)CF race best at Last Chance 2026: 1:54.780 (Levi Zeidlhack)SSM race best at Majors Apr 2016: 1:29.237 (Kevin Kopp)SSM qualifying best at Majors Apr 2016: 1:31.569 (Alan Olson)Thunderhill Raceway Park · Majors @ ThunderhillMajors @ Thunderhill2016Summit Point Raceway · Majors Apr 2016Majors Apr2016Pueblo Motorsports Park · Majors May 2016Majors May2016NOLA Motorsports Park · Voodoo Quartre 2017Voodoo Quartre2017Pueblo Motorsports Park · Colorado Home Heroes Grand Prix 2026Colorado Home Heroes Grand Prix2026Roebling Road · Southeast SARRC 2026Southeast SARRC2026High Plains Raceway · Colorado Freedom Sprints 2026Colorado Freedom Sprints2026High Plains Raceway · Last Chance 2026Last Chance2026
BSCFSSMFRIsolid race · dashed qualifying · slower is lower
100%BS race best at Majors @ Thunderhill: 100.0% of BS's (Kyle Keenan)BS race best at Voodoo Quartre 2017: 100.0% of BS's (John Phillips)BS qualifying best at Majors @ Thunderhill: 100.0% of BS's (Kyle Keenan)BS qualifying best at Voodoo Quartre 2017: 100.0% of BS's (John Phillips)Thunderhill Raceway Park · Majors @ ThunderhillMajors @ Thunderhill2016Summit Point Raceway · Majors Apr 2016Majors Apr2016Pueblo Motorsports Park · Majors May 2016Majors May2016NOLA Motorsports Park · Voodoo Quartre 2017Voodoo Quartre2017Pueblo Motorsports Park · Colorado Home Heroes Grand Prix 2026Colorado Home Heroes Grand Prix2026Roebling Road · Southeast SARRC 2026Southeast SARRC2026High Plains Raceway · Colorado Freedom Sprints 2026Colorado Freedom Sprints2026High Plains Raceway · Last Chance 2026Last Chance2026
BSCFSSMFRIsolid race · dashed qualifying · each class's best lap as a share of BS's at the same event (the reference class, changeable above); 100% is level, less is quicker, so up the chart is quicker
EventBSCFSSMFRI
Qual best Race best Trap Qual best Race best Trap vs BS % of BS Qual best Race best Trap vs BS % of BS Qual best Race best Trap vs BS % of BS 
High Plains Raceway Last Chance 2026results only2026-08-221:54.780Levi Zeidlhack · fastest of 2-2.541s (-2.17%)
No rule changes on record between these events
High Plains Raceway Colorado Freedom Sprints 2026results only2026-07-041:57.321Levi Zeidlhack · fastest of 2
No rule changes on record between these events
Roebling Road Southeast SARRC 2026results only2026-06-271:26.210W. L. Manofsky · only car
No rule changes on record between these events
Pueblo Motorsports Park Colorado Home Heroes Grand Prix 2026results only2026-05-231:37.686Levi Zeidlhack · fastest of 3 · top 3 within 7.2s+0.280s (+0.29%)
No rule changes on record between these events
NOLA Motorsports Park Voodoo Quartre 20172017-03-032:06.994John Phillips · fastest of 6 · top 5 within 9.4s2:06.427John Phillips · fastest of 5 · top 5 within 6.9s
No rule changes on record between these events
Pueblo Motorsports Park Majors May 20162016-05-281:37.406David Loken · fastest of 10 · top 5 within 2.2s
No rule changes on record between these events
Summit Point Raceway Majors Apr 20162016-04-291:31.569Alan Olson · fastest of 26 · top 5 within 1.9s1:29.237Kevin Kopp · fastest of 27 · top 5 within 0.3s
No rule changes on record between these events
Thunderhill Raceway Park Majors @ Thunderhill2016-04-082:15.069Kyle Keenan · fastest of 22:15.714Kyle Keenan · fastest of 3 · top 3 within 4.8s

By track

TrackEvents Typical % of BS Best Latest 
High Plains Raceway20 of 2 with BS
Pueblo Motorsports Park20 of 2 with BS
NOLA Motorsports Park1100.0%100.0%Voodoo Quartre 2017100.0%Voodoo Quartre 2017
Roebling Road10 of 1 with BS
Summit Point Raceway10 of 1 with BS
Thunderhill Raceway Park1100.0%100.0%Majors @ Thunderhill100.0%Majors @ Thunderhill
About this data
Every event the class ran, at any track, oldest to newest on the chart and newest first in the table. Each point is the class's best lap as a share of BS's best on the same day: the weather and the day cancel out, so one figure compares across years where lap times cannot; a class that suits one track more than another still reads differently there. It still moves when the yardstick's own balance changes or its field thins, and an event the yardstick did not run has no point. A best from fewer than three cars is greyed. The rule changes that took effect between two events are folded between their rows.